Concepts for characterizing spawning biomass of the European eel (Anguilla anguilla) in catchments
International audience Silver eels biomass production is a primary management target to be urgently achieved for starting the restoration of the European eel (Anguilla anguilla) population. An assessment of the proportion of individuals actually escaping from catchments-and able to reproduce-compare...
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ftccsdartic:oai:HAL:hal-00343687v1 2023-05-15T13:27:15+02:00 Concepts for characterizing spawning biomass of the European eel (Anguilla anguilla) in catchments Robinet, Tony Acou, A. Boury, P. Feunteun, Eric Biologie des organismes marins et écosystèmes (BOME) Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN) Centre de Recherche sur les Ecosystèmes Littoraux Anthropisés (CRELA) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS) 2008 https://hal.archives-ouvertes.fr/hal-00343687 en eng HAL CCSD Observatoire Océanologique - Laboratoire Arago hal-00343687 https://hal.archives-ouvertes.fr/hal-00343687 ISSN: 0240-8759 Vie et Milieu / Life & Environment https://hal.archives-ouvertes.fr/hal-00343687 Vie et Milieu / Life & Environment, Observatoire Océanologique - Laboratoire Arago, 2008, 57 (4), pp.201-211 silver eels escapement spawning biomass mortality indicators [SDV.BDLR.RS]Life Sciences [q-bio]/Reproductive Biology/Sexual reproduction [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2008 ftccsdartic 2021-11-21T05:05:00Z International audience Silver eels biomass production is a primary management target to be urgently achieved for starting the restoration of the European eel (Anguilla anguilla) population. An assessment of the proportion of individuals actually escaping from catchments-and able to reproduce-compared to a theoretical pristine production under no human intervention, is of critical importance for preserving this resource, and EU urges Member States to implement such tools now. This preliminary approach, developed during the EU program INDICANG, proposes to clarity some of the basic concepts needed to implement assessment tools for a characterization of the production of spawning biomass in a catchment. These concepts rely mostly oil the influence of the catchment context (conditions for the eel growth) on the biomass of future spawners produced, and oil the notion of breeding potential (production potential of future spawners, because year-to-year effective downstream migration is unpredictable from the structure of the local eel stock). In order to allow its implementation in data-poor catchments, this assessment does not aim to be fully quantitative, but to give a semi-quantitative estimation of the silver eel potential production. After being reduced by coefficients of anthropogenic mortality (fisheries, hydroelectric turbines, dams and reservoirs), this breeding potential should give a reference value for defining the future management targets and their monitoring Article in Journal/Newspaper Anguilla anguilla Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
silver eels escapement spawning biomass mortality indicators [SDV.BDLR.RS]Life Sciences [q-bio]/Reproductive Biology/Sexual reproduction [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
silver eels escapement spawning biomass mortality indicators [SDV.BDLR.RS]Life Sciences [q-bio]/Reproductive Biology/Sexual reproduction [SDE.BE]Environmental Sciences/Biodiversity and Ecology Robinet, Tony Acou, A. Boury, P. Feunteun, Eric Concepts for characterizing spawning biomass of the European eel (Anguilla anguilla) in catchments |
topic_facet |
silver eels escapement spawning biomass mortality indicators [SDV.BDLR.RS]Life Sciences [q-bio]/Reproductive Biology/Sexual reproduction [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience Silver eels biomass production is a primary management target to be urgently achieved for starting the restoration of the European eel (Anguilla anguilla) population. An assessment of the proportion of individuals actually escaping from catchments-and able to reproduce-compared to a theoretical pristine production under no human intervention, is of critical importance for preserving this resource, and EU urges Member States to implement such tools now. This preliminary approach, developed during the EU program INDICANG, proposes to clarity some of the basic concepts needed to implement assessment tools for a characterization of the production of spawning biomass in a catchment. These concepts rely mostly oil the influence of the catchment context (conditions for the eel growth) on the biomass of future spawners produced, and oil the notion of breeding potential (production potential of future spawners, because year-to-year effective downstream migration is unpredictable from the structure of the local eel stock). In order to allow its implementation in data-poor catchments, this assessment does not aim to be fully quantitative, but to give a semi-quantitative estimation of the silver eel potential production. After being reduced by coefficients of anthropogenic mortality (fisheries, hydroelectric turbines, dams and reservoirs), this breeding potential should give a reference value for defining the future management targets and their monitoring |
author2 |
Biologie des organismes marins et écosystèmes (BOME) Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN) Centre de Recherche sur les Ecosystèmes Littoraux Anthropisés (CRELA) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Robinet, Tony Acou, A. Boury, P. Feunteun, Eric |
author_facet |
Robinet, Tony Acou, A. Boury, P. Feunteun, Eric |
author_sort |
Robinet, Tony |
title |
Concepts for characterizing spawning biomass of the European eel (Anguilla anguilla) in catchments |
title_short |
Concepts for characterizing spawning biomass of the European eel (Anguilla anguilla) in catchments |
title_full |
Concepts for characterizing spawning biomass of the European eel (Anguilla anguilla) in catchments |
title_fullStr |
Concepts for characterizing spawning biomass of the European eel (Anguilla anguilla) in catchments |
title_full_unstemmed |
Concepts for characterizing spawning biomass of the European eel (Anguilla anguilla) in catchments |
title_sort |
concepts for characterizing spawning biomass of the european eel (anguilla anguilla) in catchments |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.archives-ouvertes.fr/hal-00343687 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
ISSN: 0240-8759 Vie et Milieu / Life & Environment https://hal.archives-ouvertes.fr/hal-00343687 Vie et Milieu / Life & Environment, Observatoire Océanologique - Laboratoire Arago, 2008, 57 (4), pp.201-211 |
op_relation |
hal-00343687 https://hal.archives-ouvertes.fr/hal-00343687 |
_version_ |
1766397331978059776 |